Tia technology offers bag filling systems. To ensure that the bag is clamped and material is collected only in the bag, sensors are provided with feed gate interlocked through the bag sensor. Double acting solenoids for bag clamping ensures that in case of power failure the bag remains clamped in its position. The salient features of bag filling systems include: no operator adjustments are necessary when changing to different capacities; recipes are selected by soft touch keys on the controller; auto-in-flight correction and auto tare facilities are incorporated to maintain the accuracy and to avoid frequent adjustments ensuring hassle-free operations.